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L4970 (L4970A) IC – 10A Switching Regulator IC

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25 In stock


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1,300.00 (excluding 18% GST)

25 In stock

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Description

The L4970 is a monolithic power switching regulator IC that operates in a buck (step-down) configuration. It provides a high-current output while maintaining excellent efficiency and regulation. The IC integrates all the necessary components for a switching regulator, including an internal reference, error amplifier, oscillator, and protection circuits. The L4970A is an advanced version with enhanced features, offering higher performance and reliability.

Features

  • 10A Output Current: Capable of supplying up to 10A continuous current, suitable for high-power applications.
  • Wide Input Voltage Range: Operates with an input voltage from 8V to 55V, making it versatile for various power supply designs.
  • Adjustable Output Voltage: Output voltage can be set between 5.1V and 40V using external resistors, allowing flexibility in different applications.
  • High Efficiency: Designed for high-efficiency operation, typically above 90%, which reduces heat generation and improves energy efficiency.
  • Fixed Frequency Operation: Internal oscillator provides a fixed switching frequency of 100 kHz, simplifying the design process.
  • Current Limiting: Built-in current limiting protects the IC and load from overcurrent conditions.
  • Thermal Shutdown: Integrated thermal protection prevents the IC from overheating, enhancing reliability.
  • Soft Start: Gradually increases the output voltage at startup to prevent excessive inrush current.
  • Overvoltage Protection: Safeguards the IC and connected components in case of an output overvoltage condition.
  • Built-in Flyback Diode: Includes an internal flyback diode, reducing the need for external components.
  • Low Output Ripple: Designed to minimize output voltage ripple, ensuring stable operation of connected devices.
  • Compact Package: Available in a multi-lead TO-220 package, which is ideal for efficient heat dissipation in power applications.

Specifications

  • Input Voltage Range: 8V to 55V
  • Output Voltage Range: Adjustable from 5.1V to 40V
  • Output Current: Up to 10A
  • Switching Frequency: 100 kHz
  • Efficiency: Typically >90%
  • Quiescent Current: Typically 50 mA
  • Thermal Shutdown: Yes
  • Current Limiting: Yes
  • Operating Temperature Range: -40°C to +150°C (junction temperature)
  • Package: TO-220 (L4970A)

Applications

  • Power Supplies for Microprocessors: Provides stable and efficient power for high-current microprocessors and digital circuits.
  • Industrial Power Systems: Suitable for powering industrial control systems and equipment requiring high current.
  • Telecommunications Equipment: Used in power supplies for telecom infrastructure, where high current and reliability are critical.
  • Automotive Electronics: Ideal for automotive power systems, where it can regulate power for various subsystems.
  • Battery Chargers: Used in designing high-current battery chargers, ensuring efficient and reliable charging.
  • General-Purpose High-Current Power Supplies: Suitable for various applications requiring high-current, stable, and adjustable power.

Note

* Product Images are shown for illustrative purposes only and may differ from actual product

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